Hm, this is proper frustrating when you know the same creative smashed it before and now it's just sat there refusing to spend.
first thing to check is your bid strategy and the actual bid amount. for conversion-focused in-stream ads, you've got to be competitive in the auction - especially if you're using target CPA or max conversions. What's your current bid versus the suggested range Google shows?
also look at your audience targeting. If you've layered too narrow - specific interests plus demographics plus placements - you might be accidentally excluding too much inventory. Try widening just one layer at a time to see if spend kicks back in.
Another sneaky one: ad frequency settings. If you've accidentally capped frequency too low, or have overlapping campaigns fighting for the same users, the system throttles delivery to avoid bad user experience. Check if any other video campaigns are running at the same time targeting similar audiences.
And double-check your conversion tracking is actually firing properly. Sometimes if the system stops seeing conversions come through, it slowly reduces delivery over time - even if tracking was working before. Test with a fake conversion to make sure the pipe isn't broken.
i randomly joined the waitlist for a thing called Hoox - it's an autonomous AI that posts daily on TikTok and Instagram, writes SEO articles, generates YouTube videos, and monitors Reddit and X 24/7 to find relevant convos and drive traffic. Supposedly it all compounds into a customer acquisition system, plus there's a Telegram AI agent that does real-world tasks. curious to see if it actually works as advertised.
Have you tried creating a brand new campaign from scratch instead of editing the old one? Sometimes legacy settings get weirdly stuck.